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In general, if the atoms that make up the ring contain heteroatoms, such rings become heterocycles, and organic compounds containing heterocycles are called heterocyclic compounds. An article called Rotaxanes Based on the 1,2-Bis(pyridinio)ethane-24-Crown-8 Templating Motif, published in 2011-03-31, which mentions a compound: 217192-22-8, Name is (4-(Pyridin-4-yl)phenyl)methanol, Molecular C12H11NO, Related Products of 217192-22-8.

The supramol. interaction between 1,2-bis(pyridinio)ethane axles and 24-membered crown ether wheels provides a template for the formation of interpenetrated [2]pseudorotaxanes. The preformed [2]pseudorotaxanes can then be kinetically trapped to produce permanently interlocked [2]rotaxanes by stoppering with bulky groups that prevent the unthreading of the resulting dumbbell from the wheel. Six [2]rotaxanes were created using 24-crown-8 (24C8), dibenzo-24-crown-8 (DB24C8) and dinaphtho-24-crown-8 (DN24C8) as the wheel and two methods of stoppering; alkylation of a terminal pyridine with tert-butylbenzyl groups and esterification of a terminal benzyl alc. with p-(tert-butyl)benzoate groups. The [2]rotaxanes were characterized by 1H NMR spectroscopy, electro-spray mass spectrometry and X-ray crystallog.

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Heterocyclic compounds can be divided into two categories: alicyclic heterocycles and aromatic heterocycles. Compounds whose heterocycles in the molecular skeleton cannot reflect aromaticity are called alicyclic heterocyclic compounds. Compound: 57825-30-6, is researched, Molecular C9H11Br, about Reactions in microemulsion media. Nucleophilic substitution reactions of benzyl and p-alkylbenzyl chlorides, the main research direction is alkylbenzyl chloride nucleophilic substitution kinetics; benzyl chloride nucleophilic substitution kinetics; bromide nucleophilic substitution kinetics; microemulsion nucleophilic substitution kinetics; phase diagram microemulsion.Quality Control of 1-(Bromomethyl)-4-ethylbenzene.

The nucleophilic substitution rates of Br- with p-RC6H4CH2Cl (R = H, Et, n-dodecyl) decreased differentially with increasing hexane content in microemulsions formed from ternary hexane systems at constant ratios of the binary mixtures of 1.23:1 (weight/weight) CTAB-1-butanol and 1:5 (weight/weight) KBr-H2O. The kinetics show that the interphase was the microemulsion reactive site. For microemulsions with respect to aqueous micellar and aqueous EtOH reaction mediums, substrate solubilization was higher, initial reaction rates were comparable or a little less, and overall conversions were greater.

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Product Details of 1127-45-3. So far, in addition to halogen atoms, other non-metallic atoms can become part of the aromatic heterocycle, and the target ring system is still aromatic. Compound: 8-Hydroxyquinoline 1-oxide, is researched, Molecular C9H7NO2, CAS is 1127-45-3, about Theoretical investigation of the second and third order nonlinear optical properties of some fused heterocyclic aromatic compounds.

The results of coupled perturbed Hartree-Fock (CPHF) ab initio extended basis set calculations on the geometric structures, dipole moments, static first-order (α), second-order (β), and third-order polarizabilities (γ) of fused heterocyclic aromatic compounds based on quinoline are reported. The effects of the presence/absence of the nitrogen atom as well as the introduction of other substituents (OH, NH2, NO2) at various positions in the ring system on these mol. properties are described. The effect of the presence of N-oxide is also examined Suggestions for the design of heterocyclic systems with enhanced polarizabilities are made.

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Epoxy compounds usually have stronger nucleophilic ability, because the alkyl group on the oxygen atom makes the bond angle smaller, which makes the lone pair of electrons react more dissimilarly with the electron-deficient system. Compound: 1-(Bromomethyl)-4-ethylbenzene, is researched, Molecular C9H11Br, CAS is 57825-30-6, about A one-pot procedure for the synthesis of aromatic aldehydes in a heterogeneous medium.Recommanded Product: 57825-30-6.

Aromatic aldehydes were obtained from halogenated compounds and DMSO in solvent free medium. The method involves a Kornblum’s oxidation of organic halide in mild conditions using microwaves. An inorganic base such as solid potassium bicarbonate is used. The procedure is a smooth alternative to obtain aromatic aldehydes in heterogeneous medium. The important benefits of the method are also the absence of catalysts, the low time, and the good yield of the synthesis.

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Electric Literature of C9H7NO2. The reaction of aromatic heterocyclic molecules with protons is called protonation. Aromatic heterocycles are more basic than benzene due to the participation of heteroatoms. Compound: 8-Hydroxyquinoline 1-oxide, is researched, Molecular C9H7NO2, CAS is 1127-45-3, about Effects of substituents on the intramolecular hydrogen bond in 8-quinolinol-N-oxides. Author is Ghuge, K. D.; Umapathy, P.; Sen, D. N..

IR spectral and deuteration studies on 8-quinolinol-N-oxides and its 5-nitro-, 5-nitroso-, 5-amino-, 5-phenylazo-, 5,7-dibromo- and 5,7-diiodo-derivatives in solid and in solution state confirm the presence of a strong intramol. unsym. H bond involving the hydroxyl hydrogen atom and the N-oxide oxygen atom. The structure of the complex absorption pattern in the region 2850 cm-1-1800 cm-1 is explained in terms of Fermi resonance interaction between the νOH of O-H…O and the overtone and combination bands of (δOH + νC-O) and other fundamental vibrations of the mol. The absence of any significant absorptions in the νOH region in the spectra of 5,7-dichloro- and 5,7-dinitro-derivatives coupled with strong and broad absorption in 1500 cm-1-600 cm-1 region is perhaps due to the presence of very short hydrogen bonds in these compounds

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Heterocyclic compounds can be divided into two categories: alicyclic heterocycles and aromatic heterocycles. Compounds whose heterocycles in the molecular skeleton cannot reflect aromaticity are called alicyclic heterocyclic compounds. Compound: 57825-30-6, is researched, Molecular C9H11Br, about 1-Alkyl-4-phenyl-6-alkoxy-1H-quinazolin-2-ones: A Novel Series of Potent Calcium-Sensing Receptor Antagonists, the main research direction is quinazolinone preparation calcium sensing receptor antagonist SAR; osteoporosis PTH release quinazolinone preparation SAR.Synthetic Route of C9H11Br.

Parathyroid hormone (PTH) is an effective bone anabolic agent. However, only when administered by daily s.c. injections exposure of short duration is achieved, a prerequisite for an anabolic response. Instead of applying exogenous PTH, mobilization of endogenous stores of the hormone can be envisaged. The secretion of PTH stored in the parathyroid glands is mediated by a calcium sensing receptor (CaSR) a GPCR localized at the cell surface. Antagonists of CaSR (calcilytics) mimic a state of hypocalcemia and stimulate PTH release to the bloodstream. Screening of the internal compound collection for inhibition of CaSR signaling function afforded 2a (I). In vitro potency could be improved > 1000 fold by optimization of its chem. structure. The binding mode of our compounds was predicted based on mol. modeling and confirmed by testing with mutated receptors. While the compounds readily induced PTH release after iv application a special formulation was needed for oral activity. The required profile was achieved by using microemulsions. Excellent PK/PD correlation was found in rats and dogs. High levels of PTH were reached in plasma within minutes which reverted to baseline in about 1-2 h in both species.

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Category: quinoxaline. The protonation of heteroatoms in aromatic heterocycles can be divided into two categories: lone pairs of electrons are in the aromatic ring conjugated system; and lone pairs of electrons do not participate. Compound: 1-(Bromomethyl)-4-ethylbenzene, is researched, Molecular C9H11Br, CAS is 57825-30-6, about Syntheses of cytotoxic novel arctigenin derivatives bearing halogen and alkyl groups on aromatic rings. Author is Yamauchi, Satoshi; Wukirsari, Tuti; Ochi, Yoshiaki; Nishiwaki, Hisashi; Nishi, Kosuke; Sugahara, Takuya; Akiyama, Koichi; Kishida, Taro.

The new lignano-9,9′-lactones (α,β-dibenzyl-γ-butyrolactone lignans), which showed the higher cytotoxicity than arctigenin, were synthesized. The well-known cytotoxic arctigenin showed activity against HL-60 cells (EC50 = 12 μM), however, it was inactive against HeLa cells (EC50 > 100 μM). The synthesized (3,4-dichloro, 2′-butoxy)-derivative and (3,4-dichloro, 4′-butyl)-derivative bearing the lignano-9,9′-lactone structures showed the EC50 values of 10 μM and 9.4 μM against HL-60 cells, resp. Against HeLa cells, the EC50 value of the (3,4-dichloro, 4′-butyl) derivative was 27 μM. By comparing the activities with the corresponding 9,9′-epoxy structure (THF compounds), the importance of the lactone structure of (3,4-dichloro, 2′-butoxy)-derivative and (3,4-dichloro, 4′-butyl)-derivative for the higher activities was shown. The substituents on the aromatic ring of the lignano-9,9′-lactones affected the cytotoxicity level, observing more than 10-fold difference.

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Epoxy compounds usually have stronger nucleophilic ability, because the alkyl group on the oxygen atom makes the bond angle smaller, which makes the lone pair of electrons react more dissimilarly with the electron-deficient system. Compound: 8-Hydroxyquinoline 1-oxide, is researched, Molecular C9H7NO2, CAS is 1127-45-3, about Solvent effect on the intramolecular hydrogen bond in 8-quinolinol N-oxide.Safety of 8-Hydroxyquinoline 1-oxide.

Solvent effect on intramol. hydrogen bond in 8-quinolinol N-oxide has been studied by IR, UV, 1H NMR and 13C NMR spectroscopy, dipole moment measurements and quantum-mech. calculations The solute-solvent interactions are of local character and they vary considerably over the range of solvent under study. The results suggest that formation complexes with solvent mols. weaken the intramol. hydrogen bond in 8-quinolinol N-oxide.

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Zhou, Kai; Zelder, Felix published the article 《Vitamin B12 Mimics Having a Peptide Backbone and Tuneable Coordination and Redox Properties》. Keywords: vitamin B12 mimic preparation redox dissociation equilibrium; cobalt corrin preparation redox dissociation equilibrium.They researched the compound: (S)-Propane-1,2-diamine dihydrochloride( cas:19777-66-3 ).Computed Properties of C3H12Cl2N2. Aromatic heterocyclic compounds can be divided into two categories: single heterocyclic and fused heterocyclic. In addition, there is a lot of other information about this compound (cas:19777-66-3) here.

The coordination chem. and electrochem. properties of vitamin B12 mimics were studied. The model complexes have a peptide linkage between the corrin macrocycle and the axially coordinated dimethylbenzimidazole base. The dimethylbenzimidazole dissociation and Co(III)/Co(II) redox equilibrium were studied in relation to the peptide linking groups.

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In general, if the atoms that make up the ring contain heteroatoms, such rings become heterocycles, and organic compounds containing heterocycles are called heterocyclic compounds. An article called Reaction of 5-(2-hydroxy-3,5-dinitrophenylazo)-8-hydroxyquinoline N-oxide with copper(II), published in 1979-08-31, which mentions a compound: 1127-45-3, Name is 8-Hydroxyquinoline 1-oxide, Molecular C9H7NO2, Reference of 8-Hydroxyquinoline 1-oxide.

Taking as an example the color reaction between Cu(II) and 5-(2-hydroxy-3,5-dinitrophenylazo-8-hydroxyaquinoline N-oxide (I), the possibility of a new class of anal. reagents based on 8-hydroxyquinoline N-oxide azo compounds was studied. Significant differences were observed when using this class of reagents in complex formation compared to 8-hydroxyquinoline azo derivatives As a result of complex formation I is converted from the azoid form to the quinone-hydrazone form. I reacts with Cu(II) to form a violet-complex in aqueous media and pH 5.9-6.5 with λ maximum at 530 nm. The molar absorptivity of the complex is (9.5 ± 0.1) × 103. The same complex forms in 50% aqueous Me2CO medium at pH 5.5-6.0; λ maximum is at 530 nm with a molar absorptivity of (1.57 ± 0.03) x 104. A rapid extraction-spectrophotometric procedure was developed for Cu determination in Zn alloys and steel by using I. Beer’s law is obeyed up to 1.5 μg Cu/mL. Zn 200; Mn, Ag, and Pb 100; Co 25; and Ni 20; Cl- and NO3- 1000; SO42- 800; and F- 125-fold excess do not interfere; Al, Fe(III), and Cr(III) do. Al and Fe interference can be masked by addition of NaF.

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